Condenser



' 1,636,328 y 1927' B. SAUER CONDENSER Filed May 23, 1924 57527277 lazzz'sfi5auer.

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Patented Jul 19, 1927.

UNITED STATES 1,636,328 PATENT OFFICE.

LOUIS B. SAT TEE, OF WESTERN SPRINGS, ILLINOIS, ASSIGNOR TO KELLOGG SWITCH- BOABD AND SUPPLY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLI- NOIB.

CONDENSER.

Application filed May 23, 1924. Serial No. 715,279.

My invention relates to condensers such as those used in ignition circuits or the like and an object of my invention is-the production of a condenser which is simple in construction, inexpensive to manufacture and eflicient in its operation.

A feature of my invention is the manner in which I arrange the conducting elements of my condenser so that the same are insulated from each other and extend out beyond the'insulation material or dielectric, which separates said conducting elements from each other, toform terminals.

Another feature of my invention is the provision of terminal disks which have serrations or teeth integrally formed therewith for engaging the conducting elements of my condenser; and also the provision of spring means for effecting contactual engagement of said terminal disks with the conducting elements.

Still another feature of my invention is the provision of a receptacle for receiving and enclosing my condenser, and which receptacle is provided with means for retaining the spring-means in operative engage- -ment with the disk terminals of my invention.

A further feature of my invention is the 3 manner in which I insulate one of the disk terminals and the spring means operatively associated therewith from. the enclosing receptacle of my condenser; and also the provision of means for permitting an external conductor to be connected to said spring means. f

The above features, as well as others, will be more clearly pointed out in the ensuing specification, and for a clearer understand- 40 ing of the same reference may be had to the accompanying drawings in which:

Fig. 1 is a plan view of the condenser of my invention;

Fig. 2 is a right end view of Fig. 1;

Fig. 3 isa left end view of Fig. 1;

Fig. 4 is a view ofthe condenser of my invention, on an enlarged scale, showing a portion thereof in section along the line 44 of Fig. 2;. t Fig. 5 is a plan view of one of the spring means for retaining the terminal disk of my invention in contactual engagement with one of the conducting elements of my condenser;

Fig. 6 is a view of the cover cap for the enclosing casing or receptacle of my invention; and

Fig. 7 is a partial plan view, on an enlarged scale, of the condenser of my invention showing a portion thereof in section to illustrate the arrangement ofthe conducting elements and insulating element or dielectric of my condenser.

Referring now in detail to the condenser of my invention as illustrated in the drawmgs, my condenser comprises conducting elements a and 6 made of tin foil or the like and are insulated from each other by two layers of suitable insulation material 8, such as rice paper or the like, said layers forming a suitable dielectric. In forming the condenser of my invention I wind together a predetermined number of turns of conducting elements a and b to form the plates of my condenser, and between the conducting 76 elements are wound turns of the insulation material 8 to obtain a desired capacity effect. The conducting element a is fed from one source, and the conducting element 6 is fed from another source, said sources being posil0 tioned so that the conducting elements a and b overlap each other in the central portion ofthe condenser. The insulation material 8 is wound into the condenser C between the conducting elements a and b from two differ- 86 ent sources, said sources being positioned so that one turn of insulation 8 is wound upon the other turn of insulation 8 and in direct alignment therewith, thus it will be seen that there will be two turns or layers of the 90 insulation material 8 between eachturn of the conducting element a' and each turn of the conducting element 6. The conducting elements at and b are of such a width and overlap each other at a 'oint so that a portion a of the conducting e ement a extends beyond one edge of the turns of the insulation material s, and a portion 6 of the conducting elementb extends beyond the other edge of the turns of the insulation material 6. Due to the overlapping of the conducting elements a and b,a gap 9 will be provided between each turn of the conducting element a,

and also between each turn of the conducting element b, the gaps 9 giving a slight amount of flexibility to the ends of the condenser for purposes to be pointed out later. After a predeterr. ined number of turns of the conducting elements a and b, and turns of the dielectric s are wound to form the condenser C, a layer of heavier insulation material 3 is wound around the outer layer of the dielectric a. A layer of insulation n is also wound around the condenser C and extends beyond the end of the said condenser C and abuts against the end of insulation y.

A receptacle or enclosing casing 1 is provided which is of a size to receive the condenser C. In one end of the receptacle 1 is provided a cup-shaped portion 2 integrally formed therewith, in which cup-shaped portion 2 is secured a coil spring 3 by means of a rivet 4, said rivet 4 having its head 5 engaging one end of the coil spring 3 and its other end extending through aligned,openings in the cup portion 2 and the arm 6 of the mounting racket 7 and then spun over to prevent its removal. A disk like terminal plate 8 is provided which has a plurality of serrations or teeth 9 integrally formed therewith, said plate 8 being of a size to fit into the rece tacle 1 and abut against the circumferentia shoulder 10 and also to engage the coil s ring 3. When the condenser C is inserted into the receptacle 1, the protrudin edges (1' of the conducting element a wil come into contactual enga ement with the serrated face of the terminal plate 8, the insulation layers condenser C insu ating the condenser from the rece tacle 1.

A dis like terminal plate 12, identical in construction as the terminal plate 8, is provided and adapted to fit into the receptacle 1 so that the same comes in contactual en agement with the protrudingeedges b o the conducting element 1) (it ing assumed for the sake of explanation that the condenser C is inserted into the receptacle 1 in such a manner that the protruding edges a' of the conducting element a engage the terminal plate 8), said terminal p ate 12 being of a size to fit within the protruding edge of the insulation layer n so that said layer n will insulate said terminal plate 12 from the said receptacle 1. The integrally formed serrations or teeth 13 of the terminal plate 12 will engage the protruding b of the conducting element b. A 00' spring 14 is provided which has its one end 15 engagin the terminal plate 12 and its other en 16 strai htened out and exten through a suita le opening 17 in an insu ation member 18 which fits into the receptacle-1. and engages the open end of the said receptacle 1. The said member 18 is also adjacent the smallest turn of the coil spring 14. .An enclosing cap 19 is provided, which has a circumferentlal flange 20 integrally formed therewith, and is of a size to fit over the o n end of the receptacle 1, said cap 19 being provided with a cup-shaped portion 21 integrally formed therewith. A mounting and n wound around the bracket 23, having an arm 24 in formed therewith, is secured to the cap 19 by a tubular rivet 26 which extends throu? suitably aligned openings in the metal was. ers 27, insulation members 28, and arm 2-1 of the bracket 23, said insulation members 28 insulating the metal washers 2.7 from the cap 19 and arm 2* of bracket 23, while an insulation bushing 29 insulates the rivet 26 from the cap 1!) and said arm 24. The bracket 23, metal washers 2i, insulation members 28 and org) 19 are secured together by the rivet to form a single mountable unit.

When the mountable unit in the position shown in Fig. 4, the straight terminal end 16 of the coil spring 14 will extend and protrude through the central opening in the Bil tubular rivet 26, while the inner end of the rivet 26 and a portion of the cap 19 will engage the insulation member 18, which member 18 in turn will press against the coil spring 14 and will also engage the open end of the receptacle 1, and when the said unit is in the position as shown in Fig. 4 solder is applied where the receptacle 1 and circumferential flange 20 meet whereby the said unit is secured on the receptacle 1 against displacement. The end 16 of the coil spring 14 protrudes through the tubular rivet 26 and is adapted to receive an external conductor to connect the same in circuit with one plate of my condenser through the terminal plate 12. It will-be seen that the terminal plate 12 and coil spring 14 are com pletely insulated from the enclosing recep tacle 1 and mounting bracket 23, thereby preventing the liability of shunting the condenser C.

\Vhen the condenser C is inserted into the receptacle 1 and the cap 19 is secured on said receptacle as described above and as shown in Fig. 4, the terminal plates 8 and 12' will engage the protruding portions a and b of the conducting elements a and 6 respectively. The condenser C is of such a length that when the same is inserted into the receptacle 1, the terminal plates 8 and 12 engage the protruding portions 0' and b of the conducting elements a and 1) respectively, and due to the pressure exerted u n the said terminal plates the extending edges a and b of said conducting elements being very pliable will turn over and will be mashed up against the ends of the condenser C thereby forming a substantially solid terminal or face into which are embedded the serrations or teeth 9 and 13 of the terminal plates 8 and 12 respectively, and due to the flexibility of the ends of the condenser C allowed by the gaps g a "substantially smooth terminal face is effected. The coil springs 3 and 14 are compressed due to'the length of the condenser C and the ends of the said condenser abutting against the tel-.-

.the biting minal plates 8 and 12, and it will be at once apparent that the serrations or teeth of the terminal plates 8 and 12 will be pressed into the contactual engagement with the substantially solid terminal faces formed by the protruding portions 0' and b of the conducting elements a and b respectivel and of the serrations or tech into the said solid faces will insure contactual engagement of the terminal plates 8 and 12 with the plates of my condenser and will also tend to prevent rotary movement of the condenser C within the rece tacle 1.

From the foregoin descrlption it will be seen that one plate 0 my condenser is conductively connected in circuit with the mounting bracket 7, which may be grounded while the other plate of my condenser is' conductively connected in circuit with the coil spring 14: which is adapted to receive an external conductor to complete the cir-' cuit through my condenser.

The brackets 7 and 23 are provided with suitable openings 32 and 33 for receiving bolts or screws for mounting my condenser in position for use.

Having described and illustrated a preferred embodiment of my invention it is to be understood that I do not wish to be limited to the exact structure as shown and described, as modifications and changes will readily suggest themselves, but that I intend to cover all that which may come within the spirit and scope of the appended claims.

Having described my invention what I claim as new and desire to secure by United States Letters Patent is:

1. A device of the class described including a pair of conducting elements overlapping each other, a dielectric for insulating said conducting elements from each other, said conducting element-s extending beyond the edges of said dielectric, and individual disk terminal means for each of said conducting elements, each of said disk terminal means adapted to engage the extending edge of the particular conducting element associated with the said disk terminal means, and yieldin means for maintaining said disk termina s in engagement with their respective conducting elements.

2. A device of the class described including a pair of conducting elements overlapping each other and wound into a coil, ayers of insulation wound into said coil between said conducting elements to insulate said conducting elements from each other, a portion of each of said conducting elements extending beyond the edges of said layers of insulation, and terminal plates provided with integrally formed teeth for engaging and maklng contact with said extending portions, and means for retaining said terminal plates in contactual engagement with said extending portions.

3. A device of the class described includmg a pair of conducting elements wound into a coil, layers of insulation wound into said coil between said conducting elements to insulate said conducting elements from each other, a portion of each of said conducting elements protruding out between the said layers of insulation, a receptacle for receiving said coil, terminal plates supported in said receptacle, spring means for pressing said terminal plates into contactual engagement with said protruding portions of said conducting elements, and means on said terminal plates for preventing rotation of said terminal plates relative to the ends of said conducting elements.

4. A device of the class described including conducting elements wound into layers to form a coil, layers of insulation wound between said conducting elements, a portion of one of said conducting elements protruding out between said layers of insulation at one end of said coil, and a portion of the other of said conducting elements protruding out between said layers of insulation at the other end of said coil, a receptacle for receiving tions of said conducting elements, springmeans in said receptacle for maintaining contactual engagement of said terminals and said protruding portions, and means on said terminals for preventing movement of said terminals relative to said coil.

5. A device of the class described including conducting elements wound into layers to form a coil, layers of insulation wound between said conducting elements, a portlon of one of said conducting elements protruding out between said layers of insulation at one end of said coil, and a portion of the other of said conducting elements protruding out between said layers of insulation at the other end of said coil, a receptacle for receiving said coil, terminal disks, having a plurality of teeth integrally formed therewith, supported in each end of said receptacle, spring means supported in said one end and a cap having a spring means secured thereto engaging the other end of said receptacle, said spring means adapted to engage said terminal disks to press and maintain the teeth of said disks in the protruding end portions of said conducting elements, and a mounting bracket secured to said receptacle and in conductive connection with one of said terminal disks, and a second mounting bracket secured to said cap and to form a coil, layers of insulation wound between said conducting elements, a portion of one of said conducting elements protruding out between said layers of insulation at one end of said coil, and a portion of the other of said conducting elements protruding out between said layers of insulation at the other end of said coil, a receptacle for receiving said coil, metal disks, having teeth integrally formed therewith, one of said disks supported in the closed end of said receptacle, a mounting bracket and a coil spring ccnductively associated and secured to said one end of said receptacle, said coil spring adapted to engage said metal diskand to exert pressure upon the same to embed said teeth in the protruding portion of one of said conducting elements, a cap engaging the open end of said receptacle and a coil spring secured thereto engaging the other of said disks resting in the open end of said receptacle to cause the teeth of said other disk to engage the protruding end of the other of said conducting elements, and a mounting bracket secured to said cap but insulated from'said other difi.

7. A device of the class described including conducting elements wound into layers to form a coil, layers of insulation wound between said conducting elements, a portion of one of said conducting elements protruding out between said layers of insulation at one end of said coil, and a portion of the other of said conducting elements rotruding out between said layers of inSu ation at the other end of said coil, a receptacle for receivin said coil, a metal disk, havin teeth integralFy formed therewith, supporte in the closed end of said receptacle, a mounting bracket and a coil spring conductively associated and secured to said one end of said receptacle,'said coil spring adapted to engage said metal disk and to exert pressure upon the same to embed said teeth in the protruding portion of one of said conducting elements, a. cover cap for fitting over the open end of said receptacle, a mounting brac et, means for securing said second mounting bracket to said cover cap, means for insulating said means from said bracket and said cover cap, a metal disk, having teeth integrally formed therewith, supported in said receptacle but insulated therefrom, a coil spring supported in said receptacle and adapted to engage said second metal disk to embed the teeth thereof in the protruding portion of the other of said conducting elements, and a terminal integrally formed with said coil spring extending through said first means and adapted to receive an external conductor.

8. A condenser of the character described including a pair of conducting elements, a dielectric for insulating said conducting elements from each other, a portion of one of said conducting elements protruding beyond one edge of the said dielectric, while a portion of the other of said conducting elements protrudes beyond the other edge of said dielectric, a receptacle for receiv said conducting elements and said dielectric, a termi- 7 other protruding portion of said conducting elements, said spring pressed terminals form ing the protruding portions of the said conducting elements of the respective ends into substantially solid flat faces.

9; A condenser of the class described including a pair of conducting elements wound to form a coil, a dielectric for separating said conducting elements, an enclosing casing for enclosing said conducting elements and said dielectric, a spring pressed terminal supported in one end of said casing for making contactwith one of said conducting elements, a spring pressed terminal supported in the other end of said casing for making contact with the other of said conducting elements, said spring pressed terminals provided with means for preventing turning of said terminals relative to said coil.

10. A condenser of the class described including a pair of conducting elements, a dielectric for separating said conducting elements, an enclosing casing for enclosing said conducting elements and said dielectric, a spring pressedterminal supported in one end of said casing for making contact with one of said conducting elements, a sprin pressed terminal supported in the other en of said casing for making contact with the other of said conducting elements, and means integrally formed with said terminals for insuring positive contact between said terminals and said conducting elements and also to prevent rotary movement of said conducting elements and dielectric within said casing.

11. A device of the class described including a condenser comprising a pair of conducting elements wound to form a coil, a dielectric for separating said conducting elements, an enclosing casing for receivin said condenser, a terminal supported in eac end of said casing, spring means in each end of said casing and associated with the terminal thereat, said condenser adapted to compress said spring means whereby said spring means force said terminals into constant contactual engagement with said conducting elements, said terminals provided with means for preventing turning of said terminals relative to said coil.

12. A device of the class described including a condenser, compr' a pair of conducting elements, layers 0 insulation for separating said conducting elements, an en-' closing casing for enclosing said condenser, a serrated terminal supported in each end of said casing, individual spring means conductively and operatively associated with each of said serrated terminals, said condenser adapted to compress, said spring means so that the serrations of one of said terminals are embedded in one of said conducting elements, and the serrations of the other of said terminals are embedded in the other of said conducting elements.

, 13. A device of the class described including a condenser comprising a pair of conducting elements, layers of insulation for separating said conducting elements, an enclosing casing for enclosing said condenser, a serrated terminal supportedin each end of said casing, individual spring means conductively and operatively associated with each of said serrated terminals, said condenser adapted to compress said spring means so that the serrations of one of said terminals are embedded in one of said conducting elements, and the serrations ,of the other of said terminals are embedded in the other of said conducting elements, and means on each of said spring means for permitting conductive connection with said spring means.

14. A device of the class described including a condenser comprising a pair of conducting elements wound in layers to form a coil, layers of insulation for separating said conducting elements, an enclosing casing for said condenser coil, a mounting bracket conductively secured to one end of said casing, a metal plate supported in each end of said casing, one of said metal plates adaptedto engage one of said conducting elements while the other of said metal plates is adapted to engage the other of said conducting elements, a cover cap for enclosing the open end of said casing, a mounting bracket,

means for securing said bracket to said cover cap to form a single unit; spring means secured to the closedend of said casin and said cover cap each of said springs icing associated with one of said metal plates .for maintaining contactual engagement of said metal plates and said conducting elements, and a member integrally formed with one of said spring means and adapted to extend through said first means to receive an external conductor.

15. A device of the class described including a condenser comprising a pair of conducting elements, layers of insulation for separating said conducting elements, an enclosing casing for said condenser, a metal plate supported in each end of said casing, one of said metal plates adapted to enga e one of said conducting elements while the other of said metal plates is adapted to engage the other of and conducting elements,

a cover cap for enclosing the open end of sald casing, a mounting racket, means for securing said bracket to said cover cap to.

form a single unit, individual spring means contactual engagement of said metal plates and said conducting elements, ,a member 1ntegrally formed with one of said spring means and adapted to extend through said first means to receive an external conductor, and a mounting bracket conductively secured to the closed end of said casing and connected with the other of said spring means for receiving an external conductor.

16. A device of the class described including a pair of conducting elements wound into layers to form a coil, layers of insulation wound between said conducting. elements, a portion of one of said conducting elements protruding out between the layers of said insulation at one end of said coil, and

springs being compressed to force said diskterminals into engagement with the protruding convolutions of said conducting elements to cause said protruding convolutions to be swaged to form a terminal whereby a terminal is provided for each end of said coil to be engaged by the spring pressed terminal associated therewith.

17. A device of. the character described made up of layers of conducting and insulating members in the form of a coil,-said members being wound so that the edges of the convolutions of one of the conducting members extend beyond one end of said insulating members, a receptacle for said coil,

a disk terminal engaging an end of one of 18. A device of the character described.

said conducting mem-- made up of layers of conducting and in sulating members to form a coil, said mem here being wound so that the edges of the convolutions of one of the conducting mem-- bers extend beyond one end of said insulating members and the ed s of the convolus tions of the other of sai bers extend beyond the opposite end of sa d insulating member, a receptacle tfor said coil, disk terminals supported in and receptacle the respective ends of stud conducting mem-:

conducting members, yielding means secured in said receptacle engaging said terminals to force said terminals into engagement with the mpective ends of said conduct-in members for yieldingly making contact with said ends of said conducting members.

19. A device of the character described made up of layers of conducting and insulating members to form a coil, said members being wound so that the edges of the convolutions of one of the conducting members extend beyond one 'end of said insulating members and the edges of the convolutions of the other of said conducting members extend beyond the opposite end of said insulating member, a race tacle for said coil, disk terminals suppo in said rece tacle and engaging the respective edges 0 convolutions of said conducting members, springs secured in said recegtacle engaging said terminals'to force sai terminals into eng' ement with the respective edges of convo utions of said conducting members for yieldingly making contact with said 'res tive edges of oonvolutions of'said con ucting members;

Signed by me at Chicago, in the county of Cook and State of Illinois, this 21st day of May, 1924.

LOUIS B. SAUER. 

